What Dimmer?

[steamboatwilly]

Folks,

Need to install a 1G2W dimmer switch for someone next week. They have 9 x 12v transformer lights on 20w and 50w halogens.

So.....is this a 500W LV dimmer? Does it really need to be LV?

 

[pennywise]

I use these ones as they are usually compatible with anything and have no derating factor

Richmond Lighting | Universal Economy

 

[Guest123]

You need to be careful when using standard dimmers with ELV transformers, usually no more than 5 per dimmer, depending on maufacturers instructions for the dimmer and the transformer, some makes require a certain kind of dimmer.

Also with regard to GU10 halogens, dimmers should be de-rated by 25 - 50% again depending on make and instructions. You may find that a 500W rated dimmer is only suitable for dimming 250W worth of halogen lighting.

It's worth selecting the correct dimmer form the start as you will only be going back every couple of months to swap it out otherwise.

 

[steamboatwilly]

Thanks guys!